The collection contains information on Fox family speculation in western lands, two manuscript maps from the 1790's and 1830's depicting the family's holdings in northwestern Pennsylvania, and a photograph album from the 1890's documenting Chestnutwold, the Fox estate adjacent to Andalusia. Chief correspondents are Samuel and George Fox.

The first volume in the collection, "Particulars of an Indian treaty at Conestogoe between his excellency Sir William Keith, bart, governor of Pennsilvania and the deputies of the Five Nations [July 5-8, 1721]," is a manuscript copy of a printed work by Andrew Bradford, with a preface dated July 26. See Colonial Records, 3: 121. The volume regards a meeting between Sinnekaes, Onondagoes, Cayoogoes, Keith, and James Logan. Freeman Guide: 138 and 1769.

Partly copied by Redmond Conyngham from the state records and part from and with the reports of Judge Gibson and Judge Thomas Cooper. Relates to dispute over Wyoming valley lands between Connecticut and Pennsylvania. Includes correspondence of Lord Amherst, John Armstrong, Jr., Charles Biddle, John Boyd, Zebulon Butler, Thomas Cooper, Thomas Fitch, John Franklin, James Hamilton, Joseph Hamilton, William Montgomery, John Penn, Richard Rush, Jonathan Trumbull, and Roger Wolcott.